Brash Taunter + Druid's Call + Warstorm Surge

Prerequisites

Druid's Call attached to Brash Taunter. You have a way to deal damage to Brash Taunter.

Steps

1. Deal damage to Brash Taunter.
2. Brash Taunter and Druid's Call trigger.
3. Resolve the Brash Taunter trigger, dealing that much damage to target opponent.
4. Resolve the Druid's Call trigger, creating that many 1/1 Squirrel creature tokens.
5. Each Squirrel enters the battlefield, triggering Warstorm Surge that many times.
6. Resolve all but one Warstorm Surge trigger, causing the Squirrels to each deal one damage to any target.
7. Resolve the final Warstorm Surge trigger, causing a Squirrel to deal one damage to Brash Taunter.
8. Repeat from step 2.